Slotter mechanism



May 11 1926.

1,584,263 R. L. WILCOX SLO'I'TER MECHANISM 2 Sheets-Sheet 1 Filed August14, 1922 May 11 1926.

' 1,584,263 R. L. wlLcox SLOTTER umcmmzsm Filed August 14. 1922 2sheets-sheet 2 Patented May 11, 1926.

UNITE STTES issues rut RICHARD LESTER WILGOX, OF WATEBBUB Y,CONNECTICUT, ASSIG'NOR TO THE 'WATER- BURY FABREL FOUNDRY AND MACHINECOMEANY, OF NATERIBUBY, CONNECTI- OUT, A. CORPORATION OF CONNECTICUT.

SLO'ITER MECHANISM.

Application filed August 14, 1922. Serial No. 581,776.

This invention relates to new and useful improvements in slottermechanisms and referring more particularly to a device of this characterwherein blanks are delivered to a holding device and while so held aslot is cut therein.

It is the object of this invention, among other things, to provide insuch a device an adjustable mechanism for operating the saw frame, forgripping the blank and in va' rious other ways to improve the structureof slotter mechanisms of this type so as to make the same more etlicientin its operation, more readily adjustable, and so designed as to beeconomically constructed and readily assembled and so far as possiblethe desired adjustments being made during the operation of the machine,if desired.

To these and other ends my invention consists in the slotter mechanismhaving certain details of construction and combinations of parts as willbe hereinafter described and more particularly pointed out in theclaims.

Referring to the drawings in which like numerals of reference designatecorresponding parts in the several figures;

Figure 1 is a side elevation, partly in section, of that portion of aslotting machine containing the saw and gripping mechanism;

Figure 2 is a fragmentary plan view of the cam lever and some of itsadjacent parts;

Figure 3 is a plan view of the mechanism substantially as shown inFigure 1;

Figure 4 is a detail plan view of a portion of the gripping mechanism;

Figure 5 is a fragn'iontary elevation of he parts substantially as shownin Figure 4; and

Figure 6 is an enlarged sectional viev; thereof, taken generally uponline (5-6 of Figure 4.

In the drawings 10 designates the bed of a slotting machine upon whichis secured the body 11, having an inclined front face 12 upon theupperend of which is a plate 18. ()n this plate is a block 14 that isadjustable relatively by the screw 15 that passes through a lug 16 onthe plate and is threaded into said block being secured in its severalaositions by the bolts 17. Fixed in the bloc: 14 is a shaft 18 uponwhich is movably mounted the saw frame 19', the pinion .20 and drivingwheel 21,

Journaled in the saw frame 19 is a saw 11 o 2 h tl 2 1 are r a avingieieon a saw u and a pinion 24, the teeth of which mesh into those I ofthe pinion 20.

The saw frame, saw arbor and means for rotating the latter from the.driving wheel 21 through the pinions and 24 constitute no part of mypresent invention.

' A cam lever 25 is hinged upon a pin 26 secured in a bracket 27connected with the bed 10, and a rocking movement is imparted thereto bya, cam 28 fixed upon the shaft 29 and rotated by means, not shown, a camroll 30 and a spring 31 that is secured to the lever and to a fixed pin32.

Slidable in said cam lever 25 is a block 83 that is caused to travel'ina path parallel to the length of the lever by the screw 3 1 threadedthrough said block and rotatably mounted in said lever, being heldagainst endwise movement in one direction by a collar 35 and in theopposite direction by the nuts 36, a hand wheel 87 providing convenientmeans for manualrotation thereof.

Operatively uniting the cam lever 25 and the saw frame 19 is aconnecting rod 38 that is hingedby the wrist pin 89 to the block 33, andpasses through a slot 40 in the cam lever and a pin 41 journaled in thesaw frame. A nut 42 threaded on this rod abuts against one face of thepin 41 and a hand knob 43 also threaded thereon abuts against theopposite face of the pin 41.

By removal of the hand knob 43 from the connecting rod the saw frame 19can be swung upon its pivot mounting to its open and inoperativeposition, designated by the broken lines 44 in Figure 1. As the pin 41is loosely mounted in the saw frame, it can be readily removedtherefrom, a knurled portion 45 being provided to insure a positive gripthereon.

As the cam lever 25 is actuated through the mechanism above described, arocking movement is imparted to the saw frame 19, the length andposition of the arc of travel being variable through the adjustment ofthe block 33 in the cam lever 25. This is accomplished during theoperation of the machine by reason of the manipulation of the hand wheel37. i

The nut 42 and hand knob 43 threaded upon the connecting rod 38 alsoprovide means for determining the position of the saw frame 19relatively to the adjacent parts.

The saw frame 19 after being moved downwardly, at which time the cut ismade in the head of the blank, is returned to its up position by thespring 68 which surrounds a loosely mounted pin 69 having a head '70 onits upper end. The spring abuts at one end against the head 70 and atthe other end against the body 11. This spring also has a tendency toresist the downward movement of the saw frame through the connecting rod38 and thereby insures a steady movement of the saw.

Mounted so as to swing upon a pin 46 fixed in the body 11 is a griplever 47, having adjustably secured thereon a clamp dial 4:8, by a screw49 or similar means' The washer 52 secured to the top of the pin 46 by ascrew 53 or the like, prevents axial movement of the grip lever 47 uponthe said pin. The underside of the dial is provided with a cylindricalboss 50, which projects into a recess 51 in the grip lever at? so as toassist in holding said clamp dial against lateral movement. 'This is notentirely essential, but assists however in relieving any strain theremay be upon the screw 49.

Journaled, with its axis substantially parallel with that of the pin 48,is a dial shaft 54; which is intermittently rotated by means, not shown,but of any conventional form. Fixed on this dial shaft 54 is a carryingdial 55 having a plurality of notches 56 in the periphery thereof. Oneof these notches at each rest position of the dial registers with theopening 57 between the chute plates 59 that lead from a hopper (notshown) or other source of succession of blanks. Also when in suchposition a blank, designated 60, is held in one of the notches againstthe face of the clamp dial 18, substantially as shown in Figure theblanks being dropped into the notch in the carrying dial opposite theopen space 57 and conveyed by it to the gripping position as shown inFigure 4, any suitable guard being provided to hold the blank in thenotch during this movement.

A rocking motion is imparted to the grip lever +t7 in timed relation tothe movement of the carrying dial through a rock lever 58 which ispivotally mounted upon astud 61 fixed in the body 11, having a cam roll62 at its lower end which rides against the face of a cam 63 fixed onthe shaft 29, a screw 64 being threaded through the upper end of thislever and impinging against the grip lever 47 substantially as shown inFigure 3.

As the cam 68 rotates, the lever 58 is rocked upon its pivot mounting,imparts alateral movement to the grip lever 4-7 and moves the clamp dialis again-st the blank and holds it against movement in the carrying dialwhile the saw 23 cuts a slot in the end thereof, all of the parts beingoperated in timed relation to accomplish this result.

Lateral adjustment of the saw 23 is obtained by means of the screw 65which passes through a lug connected with the bed 11, and is threadedinto the plate 13 which is secured in its several positions by bolts 17.All slack or wear of the parts that would permit axial movement of thesaw 23 is prevented by means of a screw 66 that is threaded through thesaw frame 19, and rides against the face of a lug (37 on block 14;.

Minor changes and alterations may be made within my invention, asidefrom those herein suggested, and I would therefore have it understoodthat I do not limit myself to the exact construction herein shown anddescribed, but claim all that falls fairly within the spirit and scopeof the appended claims. hat I claim as new and desire to secure byLetters Patent, is:

1. In a device of the character described; a body member; a blockadjustably mounted thereon; a saw frame pivotally mounted on the block;a driving shaft; :1 saw connected with the saw frame; means foractuating the saw frame from the driving shaft irrespective of therelative position of theblock on the body member and whereby the saw isdrawn toward the blank; and a compression spring between the saw frameand body member at a point between the saw and where power is applied tothe saw frame from the shaft that resists the movement of the saw framewhen actuated by such power. In a device of the character described; abody member; a block adjustably mounted thereon; a saw frame pivotallymounted on the block; a. driving shaft; a saw connected with the sawframe means for actuating the saw frame from the driving shaftirrespective of the relative position of the block on the body memberand whereby the saw is drawn toward the blank; and a compression springbetween the saw frame and body member at a point between the saw andwhere power is applied to the saw frame from the shaft that resists themovement of the saw frame when actuated by such power; and means forvarying the length and position of the stroke of the saw, operativewhile the saw and frame are in motion. 3. In a device of the characterdescribed; a frame; a pivotally mounted saw frame; a driving shaft; alever pivotally connected at one end to the frame and s'uppprtedadjacent to the other end by spring means; a cam connected with a shaftfor imparting movement to the lever; a block mounted in the cam leverbetween its pivot mounting and the shaft; a member held against rotationin the cam 16v and threaded 113 6 the block; a haeawhen or slidab-ly thelike for rotating said member that projects outwardly from the lever infront of the pivot mounting thereof and accessible for manipulationduring the movement of the lever; a connecting rod between the block andsaw frame; a hand wheel or the like threaded on said rod for varying thepoint of contact therewith and the saw frame; variable during themovement of the saw frame; and a saw mounted in the saw frame betweenits pivot mounting and the point of the pivotal connection of theconnecting rod.

4;. In a device of the character described; a frame; a pivotally mountedsaw frame; a driving shaft; a lever pivotally connected at one end tothe frame and supported adjacent to the other end by spring means; a camconnected with the shaft for imparting movement to the lever; a blockslidably mounted in the cam lever between the pivot mounting and theshaft; a member held against rotation in the cam lever and threaded intothe block; a hand wheel or the like for rotating the same proj ectingoutwardly from the lever in front of the pivot mounting thereof andaccessible for manipulation during the movement of the lever; aconnecting rod between the block and saw frame; a hand wheel or the likethreaded on said 10d for varying the point of contact there with and thesaw frame, variable during the movement of the saw frame; a saw mountedin the saw frame between its pivot mounting and the pivotal connectionof the connecting rod; and a yielding member between the frame and sawframe between the saw and the juncture point of the connecting rod withthe saw frame.

5. In a device of the character described, a carrier dial; a rock lever;a gripping member connected therewith; a driving shaft; a cam thereon;the said rock lever being actuated by the cam and having a part thereonin contact with said gripping member whereby said gripping member willmove toward said carrier dial in timed relation therewith and positivelygrip a blank therebetween with an unyielding pressure.

6. In a device of the character described; a carrier dial; a grippingmember for holding a blank in the carrier dial; a shaft;

means independent of the carrier dial be tween the gripping member anddriving shaft for actuating the gripping member in timed relation withthe movement of the carrier dial for positively gripping a blanktherebetween with an unyielding pressure.

7. In a device of the character described; a saw frame; means forimparting a rock ing movement to the saw frame comprising in part aconnection member; and means for pivotally and adjustably securing theconnection member to the saw frame, comprising a pin pivotally mountedin the saw frame and through which the connection member projects atsubstantially a right angle to the axis of the pin, a nut on theconnection member upon one side of the pin and a hand knob on theconnection member upon the opposite side of the pin, both the nut andhand knob co-operating with the pin to prevent movement of theconnection member relatively to the pin.

8. In a device of the character described; a carrier dial; a rock lever;a gripping member connected therewith; a second rock lever pivotallymounted upon a fixed part; means for actuating said second rock lever;and a member connected with said second rock lever havingcontact withthe first of said rock levers whereby the movement of said second rocklever is transmitted to said gripping member through said first rocklever and a blank held between said carrier dial and gripping memberwith a positive unyielding pressure.

9. In a device of the character described;

a saw frame; yielding means for moving the saw frame in one direction; adriving shaft; a cam upon the shaft; a pivotally mounted cam leveractuated in one direction by the cam, yielding means for moving the camlever in the opposite direction; a block slidably mounted in the camlever between its pivot mounting and the cam; and a connection betweenthe block and saw frame, whereby motion is imparted to the saw frame inone direction from the cam both the saw frame and cam lever beingmovable in the same direction by the yielding means.

In testimony whereof, I have hereunto affixed my signature.

RICHARD LESTER IVILGOX.

